DCT, simple
2016-08-23
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Very easy to use, clear picture!
DCT (Discrete Cosine Transform, DCT) is a real number domain transform, which is a real number cosine transform kernel functions. After discrete cosine transform of an image, a number of important visual information about the image is concentrated in a small portion of the DCT coefficients in. Therefore, the discrete cosine transform (DCT) is a lossy JPEG image compression core, while one of the so-called "transform domain information hiding algorithm" major "transform domain (DCT domain)," too. Because the two-dimensional image processing using discrete cosine transform, so the direct introduction of two-dimensional DCT transformation.
DCT (Discrete Cosine Transform, DCT) is a real number domain transform, which is a real number cosine transform kernel functions. After discrete cosine transform of an image, a number of important visual information about the image is concentrated in a small portion of the DCT coefficients in. Therefore, the discrete cosine transform (DCT) is a lossy JPEG image compression core, while one of the so-called "transform domain information hiding algorithm" major "transform domain (DCT domain)," too. Because the two-dimensional image processing using discrete cosine transform, so the direct introduction of two-dimensional DCT transformation.
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简单
dct
变化
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